DPP: Extend dpp_test with invalid Transaction ID in Peer Disc Req

Allow a Transaction ID attribute with invalid length to be sent for
protocol testing purposes.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/common/dpp.h

@@ -323,6 +323,7 @@ enum dpp_test_behavior {
 	DPP_TEST_INVALID_CONNECTOR_PEER_DISC_RESP = 79,
 	DPP_TEST_INVALID_CONNECTOR_PEER_DISC_REQ = 80,
 	DPP_TEST_INVALID_I_NONCE_AUTH_REQ = 81,
+	DPP_TEST_INVALID_TRANSACTION_ID_PEER_DISC_REQ = 82,
 };
 
 extern enum dpp_test_behavior dpp_test;

wpa_supplicant/dpp_supplicant.c

@@ -2268,6 +2268,12 @@ int wpas_dpp_check_connect(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
 		wpa_printf(MSG_INFO, "DPP: TESTING - no Transaction ID");
 		goto skip_trans_id;
 	}
+	if (dpp_test == DPP_TEST_INVALID_TRANSACTION_ID_PEER_DISC_REQ) {
+		wpa_printf(MSG_INFO, "DPP: TESTING - invalid Transaction ID");
+		wpabuf_put_le16(msg, DPP_ATTR_TRANSACTION_ID);
+		wpabuf_put_le16(msg, 0);
+		goto skip_trans_id;
+	}
 #endif /* CONFIG_TESTING_OPTIONS */
 
 	/* Transaction ID */